Results 31 to 40 of about 114 (105)

Experimental constraints on the sources of lithium-rich granites and pegmatites

Communications Earth & Environment
Rare-metal granites and pegmatites are enriched in critical metals, such as lithium (>5000 ppm), relative to conventional granites in the crust (5000 ppm lithium) are sourced from the anatexis of enriched crustal rocks (>300 ppm lithium), followed by the
Bence Horányi, Austin M. Gion, Fabrice Gaillard, Éric Gloaguen, Alexis Plunder, Jérémie Melleton, Alban Moradell-Casellas, Josselyn Garde, Saskia Erdmann, Ida Di Carlo   +9 more
doaj   +1 more source

Chemical differentiation during early paleozoic crustal anatexis in south China and implications for niobium enrichment in the source

Solid Earth Sciences
Migmatites can record the complex melting processes during crustal anatexis, and investigating their petrogenesis is crucial for deciphering the chemical differentiation processes of continental crust.
Yang Yu, Xue Wang, Xiao-Long Huang, Xiao-Han Tang, Ming-Di Gao, Bo-Hua Liu, Peng-Li He, Sheng-Zhu Zhu, Meng-Jing Li   +8 more
doaj   +1 more source

Crustal recycling and metamorphic dehydration govern the fertility of granite-associated tin systems

Communications Earth & Environment
Tin is a critical metal predominantly sourced from granite-associated deposits linked to anatexis of metasedimentary rocks and extreme magmatic differentiation.
Xiang Sun, Huan-Chao Xu, Zhi-Ming Yang, Yong-Jun Lu, Ming-Jun Zheng, Run-Sheng Yin, Pete Hollings, Jin-Long Ma, Qing-Fei Wang, Jun Deng   +9 more
doaj   +1 more source

Characteristics and Geodynamic Evolution of Indosinian Granitoids in South China: A Case Study in the Guangdong Province

Geosciences
The Indosinian granitoids of Guangdong Province, South China, record a complex history of crust–mantle interactions during the Triassic assembly of the South China Block (SCB) and Indochina Block (ICB). Integrated zircon U–Pb geochronology, geochemistry,
Jianrong Wang, Zhipeng Xie, Chuandong Xue, Wenchang Li, Lei Dou, Wei Wang, Xingwang Song   +6 more
doaj   +1 more source

Lower crustal magmatic processes and andesite genesis at Shiveluch Volcano

Volcanica
The silicic melts that eventually erupt at arc volcanoes are produced in the lower crust, yet, the storage conditions of magma in the lower crust have not been the topic of extensive study.
Andrea E. Goltz, Michael Krawczynski
doaj   +1 more source

MECHANISMS OF MANTLE‐CRUST INTERACTION AT DEEP LEVELS OF COLLISION OROGENS (CASE OF THE OLKHON REGION, WEST PRIBAIKALIE)

Геодинамика и тектонофизика, 2017
In the Chernorud granulite zone in the Olkhon region of West Pribaikalie, we studied gabbro‐pyroxenites composing tectonic plates (Chernorud, Tonta) and synmetamorphic intrusive bodies (Ulan‐Khargana), as well as nu‐ merous disintegrated boudins and ...
A. G. Vladimirov, A. S. Mekhonoshin, S. V. Khromykh, E. I. Mikheev, A. V. Travin, N. I. Volkova, T. B. Kolotilina, Yu. A. Davydenko, E. V. Borodina, V. V. Khlestov   +9 more
doaj   +1 more source

Crustal anatexis in the Aouli-Mibladen granitic complex: A window into the middle crust below the Moroccan Eastern Variscan Meseta

Journal of African Earth Sciences, 2019
The Moroccan Variscan belt comprises numerous granitoid bodies, which have been isotopically studied, but still lack a detailed petrogenetic model. The Variscan Aouli-Mibladen granitic complex in the Moroccan Eastern Meseta provides an excellent opportunity for studying the petrogenesis and the relationship with adjacent Cambro-Ordovician ...
Elabouyi, Mustapha, Dahire, Mohamed, Driouch, Youssef, Duchêne, Stéphanie, Kriegsman, Leo M., Ntarmouchant, Ahmed, Kahou, Zia Steven, Severac, Jean Luc, Belkasmi, Mohammed, Debat, Pierre   +9 more
openaire   +4 more sources

Geochemical Constraints on the Evolution of Late- to Post-Orogenic Granites in the Arabian Shield, with a Specific Focus on Jabal Al Bayda Area in the Central Hijaz Region, Saudi Arabia

Applied Sciences
The Jabal Al Bayda, located in the Hijaz terrain of northwest Saudi Arabia, comprises magmatic rocks that represent the ending phase in the Precambrian development of the Arabian Shield.
Hamdy H. Abd El-Naby, Yehia H. Dawood
doaj   +1 more source

Crust‐Mantle Interaction During Continental Deep Subduction: Evidence From Light Mo Isotopes in Post‐Collisional Mafic Igneous Rocks From the East Kunlun Orogen

Geochemistry, Geophysics, Geosystems
It is intriguing whether and how crust‐mantle interaction would proceed in continental subduction zones. Here, we report zircon U‐Pb ages and Hf isotopes, major and trace elements, and Sr‐Nd‐Mo isotopes for Late Paleozoic mafic igneous rocks from the ...
Qing‐Chen Yang, Wei Fang, Li‐Qun Dai, Li‐Tao Ma, Zi‐Fu Zhao   +4 more
doaj   +1 more source

Petrogenesis of Huichizi granite and hosted amphibolite lens: implications for early Paleozoic evolution of the North Qinling orogenic belt

Frontiers in Earth Science
The genesis of Early Paleozoic granite and its relationship with multi-stage metamorphism in the North Qinling Tectonic Belt (NQTB) are heavily debated and limit our understanding on the evolution of the Qinling Orogenic Belt. In this paper, we conducted
Zhenhua Cui, Danling Chen, Yunfei Ren, Bowen Bai, Yuan Tang, Long Ma, Minglei Liu   +6 more
doaj   +1 more source